Radiant gas burner apparatus



Nov. 20, 1956 H. D. DU FAULT RADIANT GAS BURNER APPARATUS Filed May 25,1953 INVENTOR.

United States Patent 2,771,132 RADIANT GAS BURNER APPARATUS Homer D. DuFault, Easthampton, Mass. Application May 25, 1953, Serial No. 357,080

2 Claims. (Cl. 158-113) This invention relates to improvements in gasburner apparatus.

The principal object of the invention is the provision of gas burnerapparatus which is constructed and arranged for installation in the firebox or heating section of a range such as a gas range.

Domestic gas ranges are usually provided with fire boxes or heatingsections or compartments which are separate from baking and othercompartments. Burners are installed in the fire boxes, an outer side orsides of which are provided with openings or grills and thereby the gasrange functions for general room heating in addition to its function forcooking, baking and the like.

The burner construction of the invention is adapted for use with varioustypes of gas and by reason of its novel construction and arrangement isefficient in operation.

All of the above objects I accomplish by means of such structure andrelative arrangements of parts thereof, as will fully appear by aperusal of the description below and by various specific features whichwill be hereinafter set forth.

To the above cited and other ends and with the foregoing and variousother novel features and advantages and other objects of my invention aswill become more readily apparent as the description proceeds, myinvention consists in certain novel features of construction and in thecombination and arrangement of parts as will be hereinafter moreparticularly pointed out in the claims hereunto annexed and more fullydescribed and referred to in connection with the accompanying drawingswhere- 1n:

Fig. 1 is a side elevational view of gas burner apparatus embodying thenovel features of the invention;

Fig. 2 is a plan view of the burner apparatus shown in Fig. 1 but withthe radiating shell removed;

Fig. 3 is an end elevational view of the burner apparatus shown in Figs.1 and 2; and

Fig. 4 is a perspective view of a portion of one of the shelf members ofthe apparatus.

Referring now to the drawings more in detail, the invention will befully described.

A platform or base plate is represented by 2 and is formed from sheetmetal. Said platform will be of such dimensions as to fit between theopposite and adjacent side and end walls of a fire box in its horizontalposition therein.

A burner 4 is provided which is hollow and formed to have outer andintermediate longitudinal runs 6 and 8 which are connected by transverseend portions 10 and 12.

The plate 2 is provided with an opening 3 in which the burner 4 islocated and cars 14 of the burner support the plate 2 and are securedthereto by screws 16.

The sides and ends 18 and 20 of the opening of the plate 2 are spacedoutwardly of the sides and ends of the burner 4 to provide spaces forthe upward flow of secondary air indicated by arrows a in Fig. 3.

The portions 61 and Set the burner provide spaces indicated by 7 in Fig.2 for the upward flow of secondary air indicated by arrows b in Fig. 3.

A stem 24- depends from the lower side of the burne 4 and is slidablyadjustable in a tubular part 26 of 'a support 28. The burner will besupported from the lower wall of the fire boxv of a range and the stem24 is held in various'positions by a binding screw 30 of the part 26.

An inlet 32 is provided at one endof the burner 4' which may beconnected to asuitable supply of gas.

The burner 4 is provided on its upper side with a multiplicity of gasemitting ports 34. These may be arranged in various ways but willfunction as desired when they extend in double rows throughout thelength of the runs of the burner.

Elongated shelf members 40 have lower flanges 42 secured in transverselyspaced relation to the plate 2 by any suitable means such as rivets 44.Said members 40 incline inwardly or converge relatively as they extendupwardly from the plate 2 and on upper portions are provided withelongated horizontal shelves 46 and side and end vertically extendingflanges 48 and 50, see Fig. 4.

An elongated radiating element is provided which is formed from ceramicmaterial and curves upwardly from opposite longitudinal side edges. Saidelement transversely is in the form of a half tube. Oppositelongitudinal side edges of the element 60 rest on the shelves 46. Theelement 60 is provided with relatively spaced slots 62 and holes 62' and64 therethrough.

With the burner apparatus in operation in the compartment of a range,gas is emitted from the ports of the burner 4. Secondary air flowsupwardly between the sides and ends of the burner and the sides of theopening of plate 2 in which the burner is located and upwardly throughthe spaces 7 of the burner. Said air mixes with the gas from the burnerport so that combustion takes place within the elongated chamber formedby the members 4t and element 60. Products of combustion flow throughthe slots and openings of the element as indicated by arrow 0.

The construction of the apparatus is such as to take advantage of thesuperior heating of blue flame operation and obviates the disadvantagesof yellow flame operation such as sooting and the like. Blue flameoperation is more efiicient and economical but such a flames does notradiate heat to the extent of a yellow flame. The apparatus isconstructed and arranged in such a manner that the blue flame heats theelement 60 to the point where it glows and becomes red hot whereby saidelement functions to radiate heat to the walls of the compartment inwhich the apparatus is located.

The invention may be embodied in other specific forms without departingfrom the essential characteristics thereof. Hence, the presentembodiments are therefore to be considered in all respects merely asbeing illustrative and not as being restrictive, the scope of theinvention being indicated by the appended claims rather than by theforegoing description, and all modifications and variations as fallwithin the meaning and purview and range of equivalency of the appendedclaims are therefore intended to be embraced therein.

What it is desired to claim and secure by Letters Patent of the UnitedStates is:

1. Gas burner apparatus comprising in combination, an elongatedhorizontal base plate provided with an elongated opening having oppositeand adjacent sides and ends, a burner secured to said base plate havingsides and ends spaced inwardly from the sides and ends respectively ofsaid opening, elongated shelf members having lower portions secured tosaid base plate along opposi-te sides of the opening therein andextending upwardly from said base plate, elongated supporting shelves onupper portions of said shelf members disposed above the plane of theupper side of said burner and base plate, and an elongated dome memberformed from ceramic material to have a transversely convexed wallbetween and above said shelf members and provided with oppositetransversely spaced longitudinal lower edges disposed on said supportingshelves, said wall of the dome, shelf members and upper side of theburner cooperating to form an elongated open ended horizontally disposedcombustion chamber therebetween, said wall of the dome provided withtransversely spaced rows of longitudinally spaced openings and the upperside of said burner pro vided with upwardly directed gas ports.

2. Gas burner apparatus set forth in claim 1 wherein said shelf membersrelatively converge upwardly from said base plate.

1,978,517 Wetherbee Oct. 30, 1934 1,981,602 Levey et a1. NOV. 20, 19341,981,976 Wem Nov. 27, 1934 2,638,975 Berry May 19, 1953 FOREIGN PATENTS407,540 Germany Dec. 23, 1924

